Molecular mechanism of a protein that regulates endoreduplication and cell growth in Arabidopsis

Endoreduplication is an alternative version of the classical cell cycle during which cells replicate their nuclear DNA without subsequently dividing, thereby increasing their ploidy level. This process occurs in a variety of cell types and contributes to normal growth and development of plant cells as well as plant responses to biotic and abiotic stresses. However, the underlying mechanism for endoreduplication remained elusive.